/[escript]/trunk/doc/examples/pyvisi/poisson_with_pyvisi.py
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Contents of /trunk/doc/examples/pyvisi/poisson_with_pyvisi.py

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Revision 1153 - (show annotations)
Thu May 17 06:33:54 2007 UTC (13 years, 1 month ago) by jongui
File MIME type: text/x-python
File size: 1182 byte(s)
Made some minor modifications and fixed minor bugs. Most tests appear to pass on the Altix although there are two tests which occasionally throw an error related to memory corruption.
1 # Import the necesary modules.
2 from esys.escript import *
3 from esys.escript.linearPDEs import Poisson
4 from esys.finley import Rectangle
5 from esys.pyvisi import Scene, DataCollector, Map, Camera
6 from esys.pyvisi.constant import *
7 import os
8
9 PYVISI_EXAMPLE_IMAGES_PATH = "data_sample_images"
10 X_SIZE = 400
11 Y_SIZE = 300
12 JPG_RENDERER = Renderer.ONLINE_JPG
13
14 # generate domain:
15 mydomain = Rectangle(l0=1.,l1=1.,n0=40, n1=20)
16 # define characteristic function of Gamma
17 x = mydomain.getX()
18 gammaD = whereZero(x[0])+whereZero(x[1])
19 # define PDE and get its solution u
20 mypde = Poisson(domain=mydomain)
21 mypde.setValue(f=1,q=gammaD)
22 u = mypde.getSolution()
23
24 # Create a Scene.
25 s = Scene(renderer = JPG_RENDERER, x_size = X_SIZE, y_size = Y_SIZE)
26
27 # Create a DataCollector reading directly from an escript object.
28 dc = DataCollector(source = Source.ESCRIPT)
29 dc.setData(sol = u)
30
31 # Create a Map.
32 Map(scene = s, data_collector = dc, viewport = Viewport.SOUTH_WEST,
33 lut = Lut.COLOR, cell_to_point = False, outline = True)
34
35 # Create a Camera.
36 c = Camera(scene = s, viewport = Viewport.SOUTH_WEST)
37
38 # Render the object.
39 s.render(image_name = os.path.join(PYVISI_EXAMPLE_IMAGES_PATH, "poisson.jpg"))

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